Submission #1120230

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120230		vjudge1	Art Collections (BOI22_art)	C++17	35 / 100	214 ms	512 KiB

art

#include "art.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

vector<int> ord;
int cnt, n;

void solve(int N) {
    n = N;
    vector<int> p(n);
    for(int i = 0; i < n; i++) {
        p[i] = i + 1;
    }
    int cur = publish(p);
    for(int i = 1; i < n; i++) {
        int pos = i;
        for(int l = 0, r = i - 1; l <= r;) {
            int mid = l + r >> 1;
            vector<int> t, d;
            for(int j = 0; j < mid; j++) {
                t.push_back(p[j]);
                d.push_back(p[j]);
            }
            t.push_back(p[i]);
            d.push_back(p[mid]);
            t.push_back(p[mid]);
            d.push_back(p[i]);
            for(int j = mid + 1; j < n; j++) {
                if(j != i) t.push_back(p[j]);
                if(j != i) d.push_back(p[j]);
            }
            if(publish(t) < publish(d)) {
                pos = mid;
                r = mid - 1;
            }
            else l = mid + 1;
        }
        vector<int> nw;
        for(int j = 0; j < pos; j++) {
            nw.push_back(p[j]);
        }
        nw.push_back(p[i]);
        for(int j = pos; j < n; j++) {
            if(j != i) nw.push_back(p[j]);
        }
        nw.swap(p);
    }
    answer(p);
}

Compilation message (stderr)

art.cpp: In function 'void solve(int)':
art.cpp:20:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   20 |             int mid = l + r >> 1;
      |                       ~~^~~
art.cpp:16:9: warning: unused variable 'cur' [-Wunused-variable]
   16 |     int cur = publish(p);
      |         ^~~
interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30